package org.wsalger.tools;

import java.security.MessageDigest;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class ClsTools {
	public static String MD5(String str)  
    {  
        MessageDigest md5 = null;  
        try  
        {  
            md5 = MessageDigest.getInstance("MD5"); 
        }catch(Exception e)  
        {  
            e.printStackTrace();  
            return "";  
        }  
          
        char[] charArray = str.toCharArray();  
        byte[] byteArray = new byte[charArray.length];  
          
        for(int i = 0; i < charArray.length; i++)  
        {  
            byteArray[i] = (byte)charArray[i];  
        }  
        byte[] md5Bytes = md5.digest(byteArray);  
          
        StringBuffer hexValue = new StringBuffer();  
        for( int i = 0; i < md5Bytes.length; i++)  
        {  
            int val = ((int)md5Bytes[i])&0xff;  
            if(val < 16)  
            {  
                hexValue.append("0");  
            }  
            hexValue.append(Integer.toHexString(val));  
        }  
        return hexValue.toString();  
    }
	
	public static Date f_StringToDate(String str) {  
		SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
		Date date=null;
		try {  
        	date=sdf.parse(str);
        } catch (ParseException e) {  
            e.printStackTrace();  
        }                                         
        return date;  
    }  
	
	public static Object f_CheckNull(Object o,String tmp){
		return o != null ? o : tmp;
	}
}
